le gt speed series arrive avec un nouveau coloris pour 2021 leger et rigide combo gagnant pour les pilotes qui veulent gagner details cadre gt speed series aluminum 6061 t6 frein disque hydraulique selle box echelon developpement 44 x 16t pneus kenda kompact pro race equipements cadre gt speed series mk7 elite race design taille pro 6061 t6 al alloy formed and butted speed metal tubes al cnc forged quick change disc dropout system bb86 taper 1 1 8 to 1 1 2 integrated h t chaine kmc z1 narrow 3 32 couronne 44t alu cnc developpement 44 x 16 diam collier de selle 27 2mm etrier frein promax hydraulic disc rear 140mm fourche gt bmx pro race 100 cr mo 1 1 8 steerer tapered 31 8x1 2mm blades 305mm a c 20mm dropouts guidon gt speed cr mo 8 375 h x 29 w 8 sweep 4 up taper cross bar jante ar speed series aero double wall 36h jante av speed series aero double wall 36h jeu de direction 1 1 8 1 5 taper integrated design 45x45 degree sealed bearings levier frein promax single finger hydraulic moyeu ar gt speed series disc cassette alloy cnc body 36h 4 sealed bearings 6 pawl 72point alloy shimano cassette 3 8 female allen bolts w al washers moyeu av gt speed series alloy cnc body sealed bearings 36 hole 10mm femelle pedales gt low profile fs platform design pp material boron axle pedalier gt forged alloy 2 piece 180mm arms 24mm hollow alloy spindle 44t al cnc chain ring al chain ring bolts pneus kenda kompact pro race 20 x 1 75 poids 9 38kg poignees gt statement double lock on grips potence promax impact top load 53mm length selle box echelon type boitier de pedalier bb86 poids 9 3 kg